Sorry Dadslib, but I don't think many people will think Twinkie is taking a hard line here.
Quite frankly I'm surprised that mumsnetters have not been much more voiciferous in their condemnation of domestic violence. People need to get it firmly into their heads that hitting anyone for whatever reason is a very very very very bad thing to do. There is nothing that can be used as justification, NOTHING!
Clearly neither of you shows much respect for each other and quite frankly IMO you will both be better of without each other. However, given the lack of respect in your relationship I would not have high hopes of an easy split. No doubt DS will continue to be used as a spleen to vent your furies! Poor child - what a start in life!